AB2Locus 9 quickly hits a patch of flattened bedrocklower portions on the northe and south marginslarge rocks coming up in the mid trench, west side--possible EB architecture UNDER the terracing wall? AB3Bug another 20-40 centimeters todayrock pulling and leveling in trench southrocking pulling and wall identification in trench northidentification of multiple course outer wall in trench northstone basin?